My father’s father was by all accounts a really bitter-hearted sort of person. I say “by all accounts” because I hardly knew him; he had at some point prior to my birth disowned my dad over a matter of money - he wanted to borrow a large amount of money for something my father considered ill advised, and my dad wouldn’t loan it. He wouldn’t talk to him for decades; choking to death from emphysema, his last words to my dad were “Tell him he owes me $50,000”.